Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
  • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
  • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
  • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
  • F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
  • F16F13/103—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like characterised by method of assembly, production or treatment

Definitions

• the present invention relates to a hydraulic vibration damper and the production method thereof.
• the present invention specifically relates to hydraulic engine mounts used between the engine block and the chassis of a vehicle in order to dampen the vibrations in the engine block.
• a conventional engine mount generally consists of two rigid members generally produced from metal, one end of which is connected to the engine block, the other to the vehicle chassis and a vibration dampening structure that connects these two members.
• This structure generally consists of a thick elastomeric body.
• vibration-dampening features of liquids are benefited from.
• two liquid chambers each shaped as a liquid-fillable sac, are formed in a typical hydraulic mount.
• the chambers are separated from each other by means of a partition member and communicate with each other by means of a narrow passage that enables the liquid to pass from one chamber to the other.
• the main liquid chamber is formed by means of a groove in the thick elastomeric body and limited by the partition member at the bottom.
• the compensation chamber is below the partition member and limited by an elastomeric membrane. This flexible membrane is generally supported from below by the rigid member.
• EP1628040 an embodiment is described wherein the said connection is realized by means of clips.
• the support member at the lower portion of the rubber body and the second rigid member supporting the flexible membrane are manufactured from plastic, and they are joined together by fastening the hook-shaped clips provided on one onto the other.
• This embodiment provides a practical and low-cost assembly process and also enables the mount to be disassembled without damaging the components if need be. However, it is not safe in terms of leak-proofing.
• a hydraulic engine mount that can be assembled with an easy and low-cost assembly process, disassembled without damaging the components if need be and that can provide leak-proofing in a safe manner.
• Figure 1 is an exploded isometric view of the hydraulic mount of the present invention.
• Figure 2 - is the cross-sectional view of the said mount.
• Figure 3 is the cross-sectional views of the mount showing the pre-assembly thereof. (a) and (b) shows the connection region before the pre-assembly, and (c) after the pre-assembly.
• Figure 4 is the cross-sectional view of the assembly of the frame.
• the hydraulic engine mount of the present invention is composed of a first rigid member ( 1 ) preferably connected to the engine and a second rigid member (2) preferably connected to the vehicle chassis, an elastomeric body (3) connected to the first rigid member (1), a support member (4) strengthening the lower portion (32) of the body (3), a partition member (10) composed of an upper plate (12), a lower plate (13) and an elastomeric diaphragm (11) and a flexible membrane (5) connected to the said second rigid member (2) and a rigid frame (7) that surrounds the whole mount and that is fixed to the second rigid member (2) by means of stud bolts (9).
• the first chamber that is the main liquid chamber (A) is realized by means of a cavity formed in the thick elastomeric body (3).
• the elastomeric body (3) is a hollow, truncated cone and at its upper portion (31) is joined with the first rigid member (1) to be connected to the engine block.
• the elastomeric body (3) is joined with the collar-shaped support member (4) which is preferably made of plastic.
• the elastomeric body (3) is manufactured by being moulded over the support member (4) and the first rigid member (1) at the other end so as to surround both and is bonded to these components by vulcanization.
• the main liquid chamber (A) is limited by the elastomeric body (3) from above and by the partition member (10) from below, and the second chamber, that is the compensation chamber (B) is located below the partition member (10).
• the compensation chamber (B) is limited by a flexible elastomeric membrane (5) from below.
• This flexible membrane (5) is manufactured by being moulded over and integrated with the second rigid member (2) to be connected to the vehicle chassis.
• Second rigid member (2) is connected to the vehicle chassis preferably via connection holes (21) provided on it.
• the partition member (10) is composed of two plates (12, 13) and an elastomeric diaphragm (11) confined between these two components.
• the diaphragm (11) is in direct contact with the liquid in the main liquid chamber (A) by one surface and with the compensation chamber (B) by the other surface by means of the grilled-structure of the plates (12, 13), and there is enough clearance for the diaphragm (11) to make low-amplitude oscillation between these two plates (12, 13).
• the narrow passage (C) providing the communication between two liquid chambers (A, B) is peripherally formed on the partition member (10).
• the passage (C) opens to the main liquid chamber (A) through an opening (121) on the upper plate (12) and to the compensation chamber (B) through an opening (131) on the lower plate (13).
• the assembly of the hydraulic mount of the present invention in a leak-proofing manner is preferably realized in two steps.
• the pre-assembly provides the integrity of the mount before the assembly of the frame (7).
• flexible hook-shaped legs (45) are provided on the support member (4) strengthening the lower portion (32) of the elastomeric body (3) as shown in Figure 3. These legs (45) are inserted in and engaged with corresponding housings (25) formed on the rigid member (2).
• the legs (45) are preferably fork-shaped and positioned all around the support member (4) in at least one, preferably two pairs. In Figure 3-a and 3-b, the legs (45) are shown before pre-assembly, and in 3-c after pre-assembly.
• the leak-proofing confinement of the main liquid chamber (A), the compensation chamber (B) of the hydraulic mount and the partition member (10) therebetween is realized by the assembly of the frame (7).
• the frame (7) whereof the state before the pre-assembly is shown in detail in Figure 4 and the state after the assembly in the cross-sectional view in Figure 2, is a plastic or preferably metal, almost inverted U-profiled member, having two vertical arms (71) connected to a top beam (75) and extending from two sides.
• the arms (71) have ends (73) to be inserted into vertical channels (23) on the rigid member (2).
• holes (72) are provided, that laterally pass through the cross-section of the frame (7).
• lateral recesses (22) are provided so as to align with these holes (72) when the ends (73) of the arms (71) are seated in the vertical channels (23).
• These recesses (22) are shaped so as to form passages that open to the said channels (23) by starting from the outer surface of the rigid member (2).
• a protrusion (76) is provided on the upper portion of the end (73) to be inserted into the channel (23).
• the erroneous assembly of the frame (7) with the rigid member (2) is prevented by the bottom surface (760) of this protrusion (76) seating onto the top surface (200) of the rigid member (2).
• An ear (74) protruding inwards is formed on each arm (71) of the frame (7) and above the said protrusion (76).
• the bottom surface (740) of this ear (74) is seated onto the top surface (320) of the lower portion (32) of the elastomeric body (3).
• the desired tightness of the fastening of the frame (7) to the rigid member (2) is realized by means of stud bolts (9) passing through the said recesses (22) on the rigid member (2) and the holes (72) on the arms (71) of the frame (7).
• this stud bolt (9) is shaped as a pin having a circular cross-section, and the holes and the recesses (72, 22) are shaped as circular openings in compliance with this formation.
• stud bolts (9) and corresponding openings (72, 22), all having elliptical, quadrangular or different cross-sections can be used.
• this stud bolt (9) can be shaped as a bolt.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Mechanical Engineering (AREA)
• Combined Devices Of Dampers And Springs (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (3)

Families Citing this family (3)

Family Cites Families (7)

• 2011
  • 2011-12-14 EP EP11817273.3A patent/EP2655920A1/de not_active Withdrawn
  • 2011-12-14 RU RU2013134485/11A patent/RU2013134485A/ru not_active Application Discontinuation
  • 2011-12-14 WO PCT/IB2011/055666 patent/WO2012085766A1/en active Application Filing

Non-Patent Citations (1)

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